JP3430856B2 - Cased capacitor - Google Patents
Cased capacitorInfo
- Publication number
- JP3430856B2 JP3430856B2 JP12315197A JP12315197A JP3430856B2 JP 3430856 B2 JP3430856 B2 JP 3430856B2 JP 12315197 A JP12315197 A JP 12315197A JP 12315197 A JP12315197 A JP 12315197A JP 3430856 B2 JP3430856 B2 JP 3430856B2
- Authority
- JP
- Japan
- Prior art keywords
- case
- capacitor element
- lid
- capacitor
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 title claims description 77
- 238000004804 winding Methods 0.000 claims description 17
- 239000004593 Epoxy Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 description 21
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 16
- 239000000123 paper Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000011301 petroleum pitch Substances 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はケース入りコンデン
サに関する。TECHNICAL FIELD The present invention relates to a cased capacitor.
【０００２】[0002]
【従来の技術】アルミ電解コンデンサ等のケース入りコ
ンデンサは、例えば、陽極箔と陰極箔とを電解紙を介し
て積層し、巻回し、電解液を含浸したコンデンサ素子を
金属ケースに収納し、石油ピッチやアタクチックポリプ
ロピレン等の固定剤を金属ケース内に充填してコンデン
サ素子を固定し、蓋を金属ケースに取り付けて密封した
構造になっている。ところで、近年、耐リプル性を向上
したコンデンサが要求されるようになってきた。このた
め、アルミ電解コンデンサ等のコンデンサは、電解紙の
比抵抗を低下したり、電解紙の密度を低下することによ
って内部抵抗を低下して発熱を減少し、それによって耐
リプル性を向上している。2. Description of the Related Art A cased capacitor such as an aluminum electrolytic capacitor is manufactured by, for example, laminating an anode foil and a cathode foil with electrolytic paper, winding the capacitor element and impregnating the electrolytic element into a metal case. The structure is such that a fixing agent such as pitch or atactic polypropylene is filled in a metal case to fix the capacitor element, and a lid is attached to the metal case and sealed. By the way, in recent years, a capacitor having improved ripple resistance has been required. Therefore, in capacitors such as aluminum electrolytic capacitors, the specific resistance of electrolytic paper is reduced, and the density of electrolytic paper is also reduced to reduce internal resistance and heat generation, thereby improving the ripple resistance. There is.
【０００３】[0003]
【発明が解決しようとする課題】しかし、内部抵抗を下
げることによって多少発熱を減少できるが、従来の固定
剤として使用されている石油ピッチ等は熱伝導性が低
く、コンデンサ素子の熱を放熱し難い欠点があり、耐リ
プル性の改善効果が低い欠点がある。However, although the heat generation can be reduced to some extent by lowering the internal resistance, the oil pitch etc. used as a conventional fixing agent has a low thermal conductivity and radiates the heat of the capacitor element. There are difficult drawbacks and there is a drawback that the effect of improving ripple resistance is low.
【０００４】本発明は、以上の欠点を改良し、放熱性が
良く、耐リプル性に優れ、かつ耐振性の良好なケース入
りコンデンサを提供することを課題とするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide a cased capacitor having the above drawbacks improved, good heat dissipation, excellent ripple resistance, and good vibration resistance.
【０００５】[0005]
【問題を解決するための手段】本発明は、上記の課題を
解決するために、コンデンサ素子をケースに収納し、こ
のケースに蓋を取り付けて密封したケース入りコンデン
サにおいて、エポキシ等の絶縁樹脂製の蓋と、ケースの
少なくとも底面に接触するコンデンサ素子と、前記ケー
スの内側底面又は前記蓋の裏面の少なくともどちらか一
方に設け前記コンデンサ素子の捲芯に挿入した突起と、
前記コンデンサ素子の上端面と前記蓋の裏面との間に配
置した板状のゴム状弾性体とを有することを特徴とする
ケース入りコンデンサを提供するものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a cased capacitor in which a capacitor element is housed in a case, and a lid is attached to the case to make a seal . A lid, a capacitor element in contact with at least the bottom surface of the case, and a projection provided on at least one of the inner bottom surface of the case or the back surface of the lid and inserted into the winding core of the capacitor element,
There is provided a cased capacitor having a plate-shaped rubber-like elastic body arranged between an upper end surface of the capacitor element and a back surface of the lid.
【０００６】本発明によれば、石油ピッチ等の固定剤を
介さずに、ケースの少なくとも底面にコンデンサ素子を
接触しているため、コンデンサ素子に発生した熱を効率
的にケースに伝達でき、放熱効果を向上でき、従って、
耐リプル性を改善できる。また、ケースの内側底面や蓋
の裏面に突起を設け、この突起をコンデンサ素子の巻芯
に挿入するとともに、コンデンサ素子と蓋との間にゴム
状弾性体を配置しているため、コンデンサ素子をケース
に効果的に固定できる。従って、振動により耐圧が低下
する等の特性劣化を軽減できる。According to the present invention, since the capacitor element is in contact with at least the bottom surface of the case without interposing a fixing agent such as petroleum pitch, the heat generated in the capacitor element can be efficiently transmitted to the case, and the heat is dissipated. Can improve the effect, and therefore
The ripple resistance can be improved. In addition, since a protrusion is provided on the inner bottom surface of the case or the back surface of the lid, the protrusion is inserted into the core of the capacitor element, and a rubber-like elastic body is arranged between the capacitor element and the lid, Can be effectively fixed to the case. Therefore, it is possible to reduce the characteristic deterioration such as the breakdown voltage reduction due to the vibration.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１において、１は、ほぼ円筒状
のケースであり、アルミ等の金属材からなる。そしてこ
のケース１の内側底面には、胴の部分が四角状で、先端
部分が径の小さい円筒状であり、これらの部分の間がテ
ーパー状になっている第１の突起２を設けている。この
第１の突起２の先端は円錐状であってもよい。また、ケ
ース２の口３の近傍の側面には内側を突起状にした溝４
を設けている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a substantially cylindrical case made of a metal material such as aluminum. Then, on the inner bottom surface of the case 1, there is provided a first projection 2 in which a body portion is a square shape, a tip portion is a cylindrical shape with a small diameter, and a taper shape is provided between these portions. . The tip of the first protrusion 2 may have a conical shape. In addition, on the side surface near the mouth 3 of the case 2, a groove 4 having a projecting inside is formed.
Is provided.
【０００８】５はこのケース１に収納したコンデンサ素
子である。このコンデンサ素子１は、陽極箔と陰極箔と
を電解紙を介して積層し、巻回し、陽極リード線６と陰
極リード線７とを引き出した構造になっている。陽極箔
は、エッチングした高純度のアルミ箔等の弁作用金属箔
に酸化皮膜を形成し、陽極リード線６を接続したもので
ある。陰極箔は、エッチングしたアルミ箔等の弁作用金
属箔に陰極リード線７を接続したものを用いる。電解紙
はマニラ紙やクラフト紙等を用いる。なお、コンデンサ
素子５の巻芯８は、陰極箔あるいは電解紙のみを巻回す
るか、両者を合せて積層し巻回して形成する。この巻芯
８の直径はφ２０〜４０程度にする。また、コンデンサ
素子５の最外周を陰極箔を延長して巻き取る構造として
もよく、電解紙を巻き取るよりも放熱効果を向上でき
る。さらに、コンデンサ素子５の陽極リード線６等の引
き出し方向とは反対側の底面から陰極箔をはみ出させ、
このはみ出した陰極箔をケース１の内側底面に接触する
構造としてもよく、これによって放熱効果を向上でき
る。そしてコンデンサ素子５は、コンデンサ素子５の径
ｄとケース１の内径Ｄの比ｄ／Ｄが０．９〜１．０とな
る大きさが好ましく、これによりコンデンサ素子５の温
度上昇を効果的に抑制でき、特にｄ／Ｄ＝１．０の場合
にはコンデンサ素子５の側面がケース１の内面に接触す
るため最も放熱性が良い。Reference numeral 5 is a capacitor element housed in the case 1. The capacitor element 1 has a structure in which an anode foil and a cathode foil are laminated via electrolytic paper, wound, and an anode lead wire 6 and a cathode lead wire 7 are drawn out. The anode foil is formed by forming an oxide film on a valve-action metal foil such as an etched high-purity aluminum foil and connecting the anode lead wire 6. As the cathode foil, a valve action metal foil such as an etched aluminum foil to which the cathode lead wire 7 is connected is used. As the electrolytic paper, manila paper, kraft paper or the like is used. The winding core 8 of the capacitor element 5 is formed by winding only the cathode foil or the electrolytic paper, or by stacking and stacking both. The diameter of the winding core 8 is about 20 to 40. Further, the outermost circumference of the capacitor element 5 may have a structure in which the cathode foil is extended and wound up, and the heat radiation effect can be improved as compared with the case where the electrolytic paper is wound up. Further, the cathode foil is protruded from the bottom surface of the capacitor element 5 opposite to the direction of drawing out the anode lead wire 6 and the like,
The protruding cathode foil may be in contact with the inner bottom surface of the case 1 to improve the heat dissipation effect. The capacitor element 5 preferably has a size such that the ratio d / D of the diameter d of the capacitor element 5 and the inner diameter D of the case 1 is 0.9 to 1.0, which effectively increases the temperature of the capacitor element 5. In particular, when d / D = 1.0, the side surface of the capacitor element 5 comes into contact with the inner surface of the case 1, so that the heat dissipation is best.
【０００９】また、ケース１に収納したコンデンサ素子
５はその底面をケース１の内側底面に接触している。そ
してコンデンサ素子５の巻芯８にはケース１の底面に設
けた第１の突起２を挿入している。従って、第１の突起
２は少なくとも胴部がコンデンサ素子５の巻芯８の径よ
りも多少大きい方が良い。このような構造とすることに
より、耐振性がより向上し、ケース１底面との接触も良
好になり、放熱性もより向上する。The bottom surface of the capacitor element 5 housed in the case 1 is in contact with the inner bottom surface of the case 1. The first protrusion 2 provided on the bottom surface of the case 1 is inserted in the winding core 8 of the capacitor element 5. Therefore, it is preferable that at least the body portion of the first protrusion 2 is slightly larger than the diameter of the winding core 8 of the capacitor element 5. With such a structure, vibration resistance is further improved, contact with the bottom surface of the case 1 is improved, and heat dissipation is further improved.
【００１０】９は、エポキシ等の絶縁樹脂製の蓋であ
り、ケース１の口３の部分に、この口３をかしめて取り
付けている。なお、蓋９の周囲には段差１０を設けると
ともに、この段差１０に断面が三角形状の突起１１を設
け、ゴム等の弾性材からなる弾性帯１２を配置してい
る。そしてこの弾性帯１２にケース１の屈曲した口３を
くい込ませて密閉性を向上している。また、蓋９には陽
極端子１３と陰極端子１４とを貫通して設けている。そ
して陽極端子１３には陽極リード線６を接続し、かつ陰
極端子１４には陰極リード線７を接続している。さら
に、蓋９の裏面にはほぼ中央部から突出する円錐状の第
２の突起１５を設けている。Reference numeral 9 denotes a lid made of an insulating resin such as epoxy, which is attached to the opening 3 of the case 1 by caulking the opening 3. A step 10 is provided around the lid 9, a projection 11 having a triangular cross section is provided on the step 10, and an elastic band 12 made of an elastic material such as rubber is arranged. Then, the bent mouth 3 of the case 1 is inserted into the elastic band 12 to improve the airtightness. Further, the lid 9 is provided with an anode terminal 13 and a cathode terminal 14 penetrating therethrough. The anode lead wire 6 is connected to the anode terminal 13, and the cathode lead wire 7 is connected to the cathode terminal 14. Further, a conical second protrusion 15 is provided on the back surface of the lid 9 so as to protrude from the substantially central portion.
【００１１】１６は、コンデンサ素子５の上端面と蓋９
の裏面との間に配置した円板状のゴム状弾性体であり、
中心部に貫通孔１７を設けている。このゴム状弾性体１
６には、シリコンやスチレン・ブタジエン、エチレン・
プロピレンターポリマー、ブチル等のゴムやゴム類似物
質を用いる。また、ゴム状弾性体１４の厚さは、コンデ
ンサ素子５と蓋９との間隔よりも薄くても、コンデンサ
素子５が蓋９の方向に上下動する距離が短くなるため、
その分、耐振性が向上する。しかし、ゴム状弾性体１４
の厚さは、好ましくはコンデンサ素子５と蓋９との間隔
とほぼ同一かあるいはそれ以上の厚さとする方が良い。
すなわち、この場合には、コンデンサ素子５をケース１
の底面に確実に接触させることができあるいは押付ける
ことができる。従って、放熱効果が向上するとともに、
縦方向の振動に対してケース１内でコンデンサ素子５が
上下動するのを防止でき、より耐振性を向上できる。さ
らに、コンデンサ素子５の上端面に接触する面積がその
上端面の２０％となるような大きさのゴム状弾性体１６
を用いることにより、より耐振性を向上でき、特性劣化
を低下できる。なお、図１においては、ゴム状弾性体１
５の端から離れた位置に陽極リード線６と陰極リード線
７とを配置している。しかし、ゴム状弾性体１５がコン
デンサ素子５の上端面のほぼ全面に接触する程度の大き
さの場合や陽極リード線６等のコンデンサ素子５からの
引き出し位置が巻芯８に近い場合等のときは、ゴム状弾
性体１５に陽極リード線６等が貫通できる孔を設け、陽
極リード線６等をその孔に通して陽極端子１３等に接続
する構造としてもよい。Reference numeral 16 denotes the upper end surface of the capacitor element 5 and the lid 9.
It is a disc-shaped rubber-like elastic body placed between the back and
A through hole 17 is provided at the center. This rubber-like elastic body 1
6 includes silicone, styrene-butadiene, ethylene
Propylene terpolymer, rubber such as butyl and rubber-like substances are used. Further, even if the thickness of the rubber-like elastic body 14 is smaller than the distance between the capacitor element 5 and the lid 9, the distance in which the capacitor element 5 moves up and down in the direction of the lid 9 becomes short,
The vibration resistance is improved accordingly. However, the rubber-like elastic body 14
The thickness of is preferably about the same as or more than the distance between the capacitor element 5 and the lid 9.
That is, in this case, the capacitor element 5 is attached to the case 1
The bottom surface of the can be securely contacted or pressed. Therefore, while improving the heat dissipation effect,
The capacitor element 5 can be prevented from moving up and down in the case 1 with respect to the vertical vibration, and the vibration resistance can be further improved. Further, the rubber-like elastic body 16 is sized so that the area in contact with the upper end surface of the capacitor element 5 is 20% of the upper end surface.
By using, it is possible to further improve vibration resistance and reduce characteristic deterioration. In FIG. 1, the rubber-like elastic body 1
An anode lead wire 6 and a cathode lead wire 7 are arranged at positions apart from the end of 5. However, when the rubber-like elastic body 15 has a size such that it almost entirely contacts the upper end surface of the capacitor element 5, or when the lead-out position of the anode lead wire 6 or the like from the capacitor element 5 is close to the core 8. Alternatively, the rubber-like elastic body 15 may be provided with a hole through which the anode lead wire 6 and the like pass, and the anode lead wire 6 and the like may be passed through the hole and connected to the anode terminal 13 and the like.
【００１２】そしてゴム状弾性体１６の貫通孔１７を通
してコンデンサ素子５の巻芯８まで、蓋９に設けた第２
の突起１５を挿入している。この場合、第２の突起１５
が円錐状であるため挿入作業が容易になる。そして第２
の突起１５を貫通孔１７と巻芯８とに挿入しているた
め、第１の突起２と合せて、コンデンサ素子５が横揺れ
するのをほとんど防止できる。Then, the second core is provided on the lid 9 through the through hole 17 of the rubber-like elastic body 16 to the core 8 of the capacitor element 5.
The projection 15 is inserted. In this case, the second protrusion 15
The conical shape facilitates insertion work. And the second
Since the protrusion 15 is inserted into the through hole 17 and the winding core 8, it is possible to prevent the capacitor element 5 from rolling sideways together with the first protrusion 2.
【００１３】なお、第１の突起２及び第２の突起１５と
を合せて、コンデンサ素子５の巻芯８の長さの２０％以
上の深さに挿入する方が好ましく、より耐振性が向上す
る。また、図１の実施の形態の場合には、ケース１の底
面に第１の突起２を設けるとともに、蓋９の裏面に第２
の突起１５を設けているが、どちらか一方を省略しても
よい。そして第１の突起２と第２の突起１５の両方を設
けた場合には、第２の突起１５をコンデンサ素子５の巻
芯８に挿入しない構造としてもよい。It is preferable that the first protrusion 2 and the second protrusion 15 are combined and inserted into a depth of 20% or more of the length of the winding core 8 of the capacitor element 5 to further improve vibration resistance. To do. Further, in the case of the embodiment of FIG. 1, the first projection 2 is provided on the bottom surface of the case 1, and the second projection is provided on the back surface of the lid 9.
Although the protrusion 15 is provided, either one may be omitted. When both the first protrusion 2 and the second protrusion 15 are provided, the second protrusion 15 may not be inserted into the winding core 8 of the capacitor element 5.
【００１４】１８はケース１を被覆している絶縁性のチ
ューブである。Reference numeral 18 denotes an insulating tube covering the case 1.
【００１５】次に、上記のケース入りコンデンサ１９の
製造方法を説明する。先ず、アルミ等の弁作用金属をエ
ッチングし、陽極化成処理をして酸化皮膜を形成した陽
極箔に、コールドウェルド法やかしめつけ法等により陽
極リード線６を接続する。また、陽極箔に陰極リード線
７をコールドウェルド法等により接続する。そしてこの
陽極箔と陰極箔とを電解紙を介して重ね合せて巻回し、
コンデンサ素子５を形成する。次に、コンデンサ素子５
に真空含浸法や真空加圧含浸法等によって電解液を含浸
する。電解液を含浸後、必要に応じて遠心分離処理をし
て過剰な電解液をコンデンサ素子５から除去する。この
後、陽極リード線６及び陰極リード線７を各々蓋９に設
けた陽極端子１３及び陰極端子１４に接続して、コンデ
ンサ素子５に蓋９を取付ける。そして蓋９の第２の突起
１５をゴム状弾性体１６の貫通孔１７に挿入して、ゴム
状弾性体１６を蓋９に取付ける。また、アルミ等の金属
板を用いて有底円筒状で、内側底面に第１の突起２を有
するケース１を製造する。そして蓋９を取り付けたコン
デンサ素子５をこのケース１に収納する。この際、コン
デンサ素子５の巻芯８に第１の突起２を挿入する。この
後、口３をかしめて蓋９をケース１に取付けケース１を
密閉する。この際、ゴム状弾性体１６から突出している
第２の突起１５をコンデンサ素子１の巻芯８に挿入す
る。ケース１を密閉後、高温雰囲気中において、段階的
に昇圧しながら最終的に定格電圧以上の電圧を印加して
エージング処理をする。エージング処理後、ケース５に
チューブ１８を被覆する。Next, a method of manufacturing the above-described cased capacitor 19 will be described. First, a valve metal such as aluminum is etched and anodized to form an oxide film, and the anode lead wire 6 is connected to the anode foil by a cold weld method or a caulking method. Further, the cathode lead wire 7 is connected to the anode foil by the cold weld method or the like. Then, the anode foil and the cathode foil are superposed on each other via electrolytic paper and wound,
The capacitor element 5 is formed. Next, the capacitor element 5
Is impregnated with the electrolytic solution by a vacuum impregnation method or a vacuum pressure impregnation method. After impregnation with the electrolytic solution, a centrifugal separation process is performed as necessary to remove the excessive electrolytic solution from the capacitor element 5. After that, the anode lead wire 6 and the cathode lead wire 7 are connected to the anode terminal 13 and the cathode terminal 14 provided on the lid 9, respectively, and the lid 9 is attached to the capacitor element 5. Then, the second protrusion 15 of the lid 9 is inserted into the through hole 17 of the rubber-like elastic body 16, and the rubber-like elastic body 16 is attached to the lid 9. Further, a case 1 having a bottomed cylindrical shape and having the first protrusion 2 on the inner bottom surface is manufactured using a metal plate such as aluminum. Then, the capacitor element 5 with the lid 9 attached is housed in the case 1. At this time, the first protrusion 2 is inserted into the winding core 8 of the capacitor element 5. Then, the mouth 3 is caulked, the lid 9 is attached to the case 1, and the case 1 is sealed. At this time, the second protrusion 15 protruding from the rubber-like elastic body 16 is inserted into the winding core 8 of the capacitor element 1. After the case 1 is hermetically sealed, in a high temperature atmosphere, a voltage not less than the rated voltage is finally applied while gradually increasing the pressure to perform an aging treatment. After the aging treatment, the case 5 is covered with the tube 18.
【００１６】[0016]
【実施例】次に、定格４００Ｖ，１００００μＦで、大
きさが直径約８９mm、長さ１５６mmの円筒状のアルミ電
解コンデンサの実施例について、従来例とともに、コン
デンサ素子中心部の温度と、耐振性とを測定した。な
お、実施例は図１に示す通りの構造とする。そしてケー
ス１は外径８８．９mm、内径８６．６mmの大きさで、ア
ルミ製とする。このケース１の底面に設けた第１の突起
２は、全体の長さが３５mmで、胴部が長さ１８mm、その
一辺が７．５mm、先端部が長さ１０mm、径４mmとする。
また、コンデンサ素子５は、全体の直径が８５mm、そし
て巻芯８の直径が１０mmで、中心部を電解紙と陰極箔と
を積層して直径４５mmの大きさまで巻回して形成したも
のとする。さらに、蓋９に設けた第２の突起１５は、長
さ３５mmで、根本の径が７．５mmとする。そして、ゴム
状弾性体１６は、直径２０mm、厚さ１５mmの円板状で、
中心に設けた貫通孔１７の直径が８mmのシリコンゴムか
らなる。また、従来例は、中心部分から陽極箔と陰極箔
とを電解紙を介して積層したものを巻回したコンデンサ
素子を用い、このコンデンサ素子を石油ピッチからなる
固定剤によりケースに固定する以外は、実施例と同一の
条件とする。そしてコンデンサ素子の中心部の温度上昇
は、温度４０℃の雰囲気中に試料を放置し、周波数１２
０Ｈｚのリプル電流６０Ａを流して測定した。その結
果、実施例の方が従来例に比較して約４５％発熱が低下
した。さらに、耐振性は、ＪＩＳ−Ｃ５１４１による試
験方法により確認した。その結果、実施例及び従来例と
も異常は無かった。これらの測定結果から、実施例によ
れば従来例に比較して、許容リプル電流は３５％改善さ
れた。EXAMPLE Next, an example of a cylindrical aluminum electrolytic capacitor having a rating of 400 V and 10000 μF, a size of about 89 mm and a length of 156 mm, along with the conventional example, the temperature of the central part of the capacitor element and the vibration resistance Was measured. The embodiment has a structure as shown in FIG. The case 1 has an outer diameter of 88.9 mm and an inner diameter of 86.6 mm and is made of aluminum. The first protrusion 2 provided on the bottom surface of the case 1 has an overall length of 35 mm, a body portion having a length of 18 mm, one side thereof having a length of 7.5 mm, a tip portion having a length of 10 mm and a diameter of 4 mm.
The capacitor element 5 has an overall diameter of 85 mm, a winding core 8 having a diameter of 10 mm, and is formed by laminating an electrolytic paper and a cathode foil at the central portion and winding them up to a diameter of 45 mm. Further, the second projection 15 provided on the lid 9 has a length of 35 mm and a root diameter of 7.5 mm. The rubber-like elastic body 16 is a disc-shaped member having a diameter of 20 mm and a thickness of 15 mm,
The through hole 17 provided in the center is made of silicon rubber having a diameter of 8 mm. Further, the conventional example uses a capacitor element formed by winding a laminate of an anode foil and a cathode foil with electrolytic paper interposed from the center portion, and except that the capacitor element is fixed to a case with a fixative composed of petroleum pitch. The same conditions as in the example are used. The temperature rise of the central part of the capacitor element is caused by leaving the sample in an atmosphere of a temperature of 40 ° C.
The measurement was performed by applying a ripple current of 60 A at 0 Hz. As a result, the heat generation of the example was reduced by about 45% as compared with the conventional example. Furthermore, the vibration resistance was confirmed by the test method according to JIS-C5141. As a result, there was no abnormality in the example and the conventional example. From these measurement results, according to the example, the allowable ripple current is improved by 35% as compared with the conventional example.
【００１７】[0017]
【発明の効果】以上の通り、本発明によれば、コンデン
サ素子をケースの底面に接触するとともに、コンデンサ
素子の巻芯に突起を挿入し、かつコンデンサ素子と蓋と
の間にゴム状弾性体を配置しているため、放熱性が向上
し、耐リプル性を改善でき、耐振性に優れたケース入り
コンデンサが得られる。As described above, according to the present invention, the capacitor element is brought into contact with the bottom surface of the case, the projection is inserted into the core of the capacitor element, and the rubber-like elastic body is provided between the capacitor element and the lid. The heat dissipation property is improved, the ripple resistance is improved, and a cased capacitor having excellent vibration resistance is obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施の形態の断面図を示す。FIG. 1 shows a cross-sectional view of an embodiment of the present invention.
１…ケース、 ２…第１の突起、 ５…コンデンサ素
子、 ８…巻芯、９…蓋、 １５…第２の突起、 １６
…ゴム状弾性体、１９…ケース入りコンデンサ。DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... 1st protrusion, 5 ... Capacitor element, 8 ... Core, 9 ... Lid, 15 ... 2nd protrusion, 16
… Rubber-like elastic body, 19… Capacitor in case.
Claims (2)
ケースに蓋を取り付けて密封したケース入りコンデンサ
において、エポキシ等の絶縁樹脂製の蓋と、ケースの少
なくとも底面に接触するコンデンサ素子と、前記ケース
の内側底面又は前記蓋の裏面の少なくともどちらか一方
に設け前記コンデンサ素子の捲芯に挿入した突起と、前
記コンデンサ素子の上端面と前記蓋の裏面との間に配置
した板状のゴム状弾性体とを有することを特徴とするケ
ース入りコンデンサ。1. A case encased in which a capacitor element is housed in a case, and a lid is attached to the case to seal the case, a lid made of an insulating resin such as epoxy , a capacitor element that contacts at least the bottom surface of the case, and the case. Of the plate-like rubber disposed between the upper end surface of the capacitor element and the back surface of the lid , and a protrusion provided on at least one of the inner bottom surface of the lid or the back surface of the lid and inserted into the winding core of the capacitor element. A cased capacitor having a body.
ケースに蓋を取り付けて密封したケース入りコンデンサ
において、エポキシ等の絶縁樹脂製の蓋と、ケースの少
なくとも底面に接触するコンデンサ素子と、前記ケース
の内側底面と前記蓋の裏面の両方に設け前記コンデンサ
素子の捲芯に挿入した突起と、前記コンデンサ素子の上
端面と前記蓋の裏面との間に配置した板状のゴム状弾性
体とを有することを特徴とするケース入りコンデンサ。2. A case-encapsulated capacitor in which a capacitor element is housed in a case and a lid is attached to the case to hermetically seal, a lid made of an insulating resin such as epoxy , a capacitor element contacting at least a bottom surface of the case, and the case. a protrusion and the inner bottom surface and inserted into the winding core of the capacitor element is provided on both the rear surface of the lid, the top of the capacitor element
A cased capacitor having a plate-shaped rubber-like elastic body disposed between an end surface and a back surface of the lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12315197A JP3430856B2 (en) | 1997-04-25 | 1997-04-25 | Cased capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12315197A JP3430856B2 (en) | 1997-04-25 | 1997-04-25 | Cased capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10303083A JPH10303083A (en) | 1998-11-13 |
| JP3430856B2 true JP3430856B2 (en) | 2003-07-28 |
Family
ID=14853456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12315197A Expired - Lifetime JP3430856B2 (en) | 1997-04-25 | 1997-04-25 | Cased capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3430856B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102347145A (en) * | 2010-07-26 | 2012-02-08 | 周旺龙 | Installation fixing structure with leakage-proof function in large aluminium electrolysis capacitor |
| WO2012092699A1 (en) * | 2011-01-03 | 2012-07-12 | Zhou Wanglong | Mounting and fixing structure having leakproof function in large aluminum electrolytic capacitor |
| CN102737846A (en) * | 2011-04-07 | 2012-10-17 | 周旺龙 | Core cladding fixing pillar for internal side of capacitor cover board |
| JP5839696B2 (en) * | 2012-04-25 | 2016-01-06 | サン電子工業株式会社 | Capacitor |
-
1997
- 1997-04-25 JP JP12315197A patent/JP3430856B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10303083A (en) | 1998-11-13 |
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